Reel spring of video tape cassette

Details Reel spring of video tape cassette Reel spring of video tape cassette

1992-04-07

1994-07-05

Will, Thomas B.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Cartridge system

360132, G11B 23087

Patent

active

053260481

ABSTRACT:
There discloses a reel spring used in a magnetic tape of a video tape cassette comprising a base portion having apertures for installing a reel spring in an upper housing of a tape cassette and a pair of end portions extending at a certain angle to the plane of the base portion wherein first embossments are made longitudinally to improve a spring tension and second embossments are made to hold protruding pivots of tape reels between tips of the reel spring, spacing from the first embossments. The size of the second embossments is formed to be broad enough for the pivots' running smoothly and the second embossments project in a contrary direction to the bend of the end portions.

REFERENCES:
patent: 3739998 (1973-06-01), Esashi et al.
patent: 4544062 (1985-10-01), Maehara
patent: 4656549 (1987-04-01), Schoettle et al.
patent: 4662579 (1987-05-01), Gelardi et al.
patent: 4672498 (1987-06-01), Harada
patent: 4770367 (1988-09-01), Carroll
patent: 4826097 (1989-05-01), Grant et al.
patent: 4899243 (1990-02-01), Bordignon
patent: 4903916 (1990-02-01), Carroll
patent: 5042740 (1991-08-01), Schoettle et al.
patent: 5046683 (1991-09-01), Carroll
patent: 5094434 (1992-03-01), Ryu

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